Answer:
187.5
Explanation:
A=1/2(b+b)
=1/2x 25= 1/2x 25/1=25/2 then you have divide 25 divided by 2=
12.5 then you multuply 12.5 x 15
12.5x15 you first multiply 5x5=25 put the 2 in the top of the 2, then 5x2=10+2=12 then you put 1 over the 1( in the 12.5) then 5x1+1=6 which all together will be 625 then 1x5=5 1x2=2 and 1x1=1 wich it will be 625
+1250=187.5
Hope this helps